It's pretty much what made Grisham so scary. The More Espers you put near him the more toolboxes he gets. Put Grisham in the same room as Accelerator, Meltdowner and Railgun and he effectively has all their powers at once. Those abilities are then backed up by 50-60 years of military experience so you add his tactical knowledge on top of those powers and he generally comes out on top.

It's why he was known as the Esper Killer.

The key to fighting him is to limit his toolbox by only using people who have the same power against him (EX: All Telekinetics)

but that isn't counting his most deadly weapon of all

Epic Story Telling ability

toma would still win somehow lol although it would just be a slugfest depending on his range to grab abilities from

It's pretty much what made Grisham so scary. The More Espers you put near him the more toolboxes he gets. Put Grisham in the same room as Accelerator, Meltdowner and Railgun and he effectively has all their powers at once. Those abilities are then backed up by 50-60 years of military experience so you add his tactical knowledge on top of those powers and he generally comes out on top.

It's why he was known as the Esper Killer.

The key to fighting him is to limit his toolbox by only using people who have the same power against him (EX: All Telekinetics)

but that isn't counting his most deadly weapon of all

Epic Story Telling ability

toma would still win somehow lol although it would just be a slugfest depending on his range to grab abilities from

well Grisham is like 80 years old. Even with military training taking on a vicious young teenager like Toma in fisticuffs would be a problem.